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Finding the Fourth Proportional to 440.07, 607.31 and 243.60

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Solution

The fourth proportional to 440.07, 607.31 and 243.60 is: 336.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.07 : 607.31 = 243.60 : x
  2. Step 2: Convert to fraction form
    440.07/607.31 = 243.60/x
  3. Step 3: Cross multiply
    440.07x = 607.31 × 243.60
  4. Step 4: Simplify right side
    440.07x = 147,940.72
  5. Step 5: Solve for x
    x = 147,940.72/440.07
  6. Step 6: Final answer
    x = 336.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.